The perfect set for building, strong, healthy and fantastic looking nails, the Active Build Duo from Leighton Denny will make the ultimate gift, or an indulgent treat for yourself. The duo contains an Active Build Serum (a protective coat for weak, thin or fragile nails), and an Active Build Shield (an intensive serum to strengthen weak, thin or fragile nails). Use together to care for your nails, and leave them looking picture perfect.